Table 2.

Relation of NC-GE to HC-SWR occurrences^a

GE type	Sleep stage	HC longitudinal axis	SWR versus GE related (KS test p value)	Peak latency (ms), mean	Peak latency (ms), DistPeak	Nonzero latency, binomial p value	Nonzero latency, binomial pvalue, overall
TB onset	N2	Anterior	0.023*	−92	−104	0.238	0.0011*
		Posterior	0*	−45**	−123**	0.065**
	N3	Anterior	0.023*	0	−95	0.508
		Posterior	0.003*	−62**	−209**	0.052**
DS peak	N2	Anterior	0*	0	94	0.228	0*
		Posterior	0*	186*	356*	0*
	N3	Anterior	0.002*	35	236	0.091
		Posterior	0*	128*	224*	0*
SS onset	N2	Anterior	0.115	150*	179*	0.009*	0.0002*
		Posterior	0.02*	187*	309*	0.001*
	N3	Anterior	0.452	−32	−229	0.481
		Posterior	0.073	238**	342**	0.092**
US peak	N2	Anterior	0*	126*	216*	0*	0*
		Posterior	0*	164*	279*	0*
	N3	Anterior	0*	76*	134*	0*
		Posterior	0*	81*	85*	0.013*

^aSeparate values and statistical significance tests are shown for NREM sleep Stage N2 versus Stage N3, for anterior versus posterior HC, and for different GEs. Tests indicate whether there was a significant association between the times of occurrence of the SWR and GE in the overall histogram of significant histogram peaks (shown in Figure 3 and Extended Data Figure 3-1 (fourth column); whether the GE occurred significantly before the SWR (negative numbers) or after, when measuring the peak latency as the mean value across cortico-HC pairs (fifth column), or as the peak of an extreme value distribution fitted over the ±500 ms histogram of histograms in Figure 3 and Extended Data Figure 3-1 (sixth column). The seventh column shows whether there is a significant difference in the number of GE occurring 500 ms before versus 500 ms after the SWR. The eighth column contains results from the same test as the seventh column but applied to data with N2/N3/aHC/pHC combined.

*Significant values.

**Trends. For columns 4, 7, and 8, extremely small p values (< 0.0001) are represented by 0 for clarity.